The child from the Washington, D.C., area was hospitalized and is currently recovering. The flu strain detected was type A (H1N1) influenza.

Last season, the first case of the flu was reported on Oct. 19, 2012.

The influenza vaccine protects against both influenza A and B strains, including the H1N1 strain.

The virus that causes influenza spreads from person to person through coughing or sneezing, as well as through direct contact with infected people and contaminated surfaces or objects. Symptoms usually begin one to four days after being exposed to the virus, and include fever, cough, sore throat, fatigue and body aches.

If you believe you are ill with influenza:

- Stay home from work and school whenever possible to avoid spreading the flu to your friends and coworkers.- Get rest and drink plenty of fluids.- Cover your mouth and nose when sneezing or coughing- Use alcohol-based hand sanitizers and wash your hands often.- Contact your healthcare provider for management of flu symptoms or treatment of any complications.